feat(identity): redesign identity module and introduce RBAC foundation

- Redesign the Identity module with a richer domain model.
- Extend the User entity to support username, Authentik integration, activity tracking, and storage information.
- Add Role and Permission domain models with many-to-many relationships.
- Implement RBAC foundation using UserRole, RolePermission, and UserPermission mappings.
- Add user storage quota and usage fields with default values.
- Introduce Authentik identifiers and synchronization metadata.
- Refactor user domain logic for role and permission management.
- Update Prisma schema to support the new identity architecture.
- Improve JWT authentication and permission guard integration.
- Update repositories, handlers, controllers, mappers, DTOs, and Swagger configuration.
- Refresh environment configuration and project dependencies.

Target V1.txt

@@ -0,0 +1,25 @@
+RayLab Core
+│
+├── Identity
+│   ├── User
+│   ├── Group
+│   ├── Role
+│   └── Permission
+│
+├── Authentication
+│
+├── Authorization
+│
+├── Audit
+│
+├── Scheduler
+│
+├── Media
+│
+├── Storage
+│
+├── Configuration
+│
+├── Workflow / Events
+│
+└── Registry